Hi All, Just a gentle reminder as regards this patch.
Bhanu has a new documentation patch for INSTALL.DPDK, maybe it should be added as part of that? Is there value in back porting this patch to OVS 2.5 though? Thanks Ian > -----Original Message----- > From: Stokes, Ian > Sent: Tuesday, June 14, 2016 4:02 PM > To: dev@openvswitch.org > Cc: Stokes, Ian > Subject: [PATCH v1] INSTALL.DPDK: Update vhost multiqueue instructions. > > Add details regarding PMD and rxq configuration to the vhost-user > multiqueue section to better enable packet enqueueing across multiple > vhost queues. > > Signed-off-by: Ian Stokes <ian.sto...@intel.com> > --- > INSTALL.DPDK.md | 11 +++++++++++ > 1 files changed, 11 insertions(+), 0 deletions(-) > > diff --git a/INSTALL.DPDK.md b/INSTALL.DPDK.md index c2e32bf..afab7d7 > 100644 > --- a/INSTALL.DPDK.md > +++ b/INSTALL.DPDK.md > @@ -674,6 +674,17 @@ Follow the steps below to attach vhost-user port(s) > to a VM. > -device virtio-net- > pci,mac=00:00:00:00:00:02,netdev=mynet2,mq=on,vectors=$v > ``` > > + A least 2 PMDs should be configured for the vswitch when using > multiqueue. > + Using a single PMD will cause traffic to be enqueued to the same > vhost > + queue rather than being distributed among different vhost queues for > a > + vhost-user interface. > + > + If traffic destined for a VM configured with multiqueue arrives to > the > + vswitch via a physical DPDK port, then the number of rxqs should > also be > + set to at least 2 for that physical DPDK port. This is required to > increase > + the probability that a different PMD will handle the multiqueue > + transmission to the guest using a different vhost queue. > + > If one wishes to use multiple queues for an interface in the guest, > the > driver in the guest operating system must be configured to do so. It > is > recommended that the number of queues configured be equal to '$q'. > -- > 1.7.4.1 _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
